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HMP240

Appendix 3: Digital current loop module M210300en

106

• Set the serial port of the terminal to 4800 baud, even parity, seven

data bits and one stop bit, full duplex (4800 E 7 1 FDX).

• The serial settings of the transmitter must also be 4800 E 7 1 FDX

and the transmitter must be in STOP mode. If these factory settings

have been changed, they must returned. Connect the RS 232C port of

the terminal to connector X17 on the top of the main board and switch

the power on.

RX GND TX

X17

Dual loop wiring

• Set the address of the transmitter; you can choose any number

between 1 and 99. In this example the address is 22:

>addr 22

Address : 22

• Set the serial bus settings according to your system. This setting will

become valid after next RESET or power off:

>seri 2400 e 7 1 f

2400 E 7 1 FDX

• Switch echo on:

>echo on

ECHO : ON

• Change the serial output mode into POLL:

>smode poll

Serial mode : POLL

NOTE 1

The SMODE command must be given last.

NOTE 2

The transmitter outputs no prompt (>) after the SMODE

POLL command and it only reacts to commands which

include its address.

• Check that the transmitter responds to its address:

1 2 ... 103 104 105 106 107 108 109 110 111 112 113 ... 129 130

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